<?php
// no direct access
defined('ABSPATH') or die();

if(!class_exists('LSD_User')):

/**
 * Listdom User Class.
 *
 * @class LSD_User
 * @version	1.0.0
 */
class LSD_User extends LSD_Base
{
    /**
	 * Constructor method
	 */
	public function __construct()
    {
        parent::__construct();
	}

    public static function register($user_login, $user_email, $password = null)
    {
        // Password
        if(!$password) $password = wp_generate_password(12);

        // Errors
        $errors = new WP_Error();
        $sanitized_user_login = sanitize_user($user_login);

        /**
         * Filters the email address of a user being registered.
         *
         * @since 2.1.0
         *
         * @param string $user_email The email address of the new user.
         */
        $user_email = apply_filters('user_registration_email', $user_email);

        // Check the username.
        if('' === $sanitized_user_login) $errors->add('empty_username', __('<strong>Error</strong>: Please enter a username.'));
        elseif(!validate_username($user_login))
        {
            $errors->add('invalid_username', __('<strong>Error</strong>: This username is invalid because it uses illegal characters. Please enter a valid username.'));
            $sanitized_user_login = '';
        }
        elseif(username_exists($sanitized_user_login)) $errors->add('username_exists', __('<strong>Error</strong>: This username is already registered. Please choose another one.'));
        else
        {
            /** This filter is documented in wp-includes/user.php */
            $illegal_user_logins = (array) apply_filters('illegal_user_logins', []);
            if(in_array(strtolower($sanitized_user_login), array_map('strtolower', $illegal_user_logins), true)) $errors->add('invalid_username', __('<strong>Error</strong>: Sorry, that username is not allowed.'));
        }

        // Check the email address.
        if('' === $user_email) $errors->add('empty_email', __('<strong>Error</strong>: Please type your email address.'));
        elseif(!is_email($user_email))
        {
            $errors->add('invalid_email', __('<strong>Error</strong>: The email address isn&#8217;t correct.'));
            $user_email = '';
        }
        elseif(email_exists($user_email)) $errors->add('email_exists', __('<strong>Error</strong>: This email is already registered. Please choose another one.'));

        /**
         * Fires when submitting registration form data, before the user is created.
         *
         * @since 2.1.0
         *
         * @param string   $sanitized_user_login The submitted username after being sanitized.
         * @param string   $user_email           The submitted email.
         * @param WP_Error $errors               Contains any errors with submitted username and email,
         *                                       e.g., an empty field, an invalid username or email,
         *                                       or an existing username or email.
         */
        do_action('register_post', $sanitized_user_login, $user_email, $errors);

        /**
         * Filters the errors encountered when a new user is being registered.
         *
         * The filtered WP_Error object may, for example, contain errors for an invalid
         * or existing username or email address. A WP_Error object should always be returned,
         * but may or may not contain errors.
         *
         * If any errors are present in $errors, this will abort the user's registration.
         *
         * @since 2.1.0
         *
         * @param WP_Error $errors               A WP_Error object containing any errors encountered
         *                                       during registration.
         * @param string   $sanitized_user_login User's username after it has been sanitized.
         * @param string   $user_email           User's email.
         */
        $errors = apply_filters('registration_errors', $errors, $sanitized_user_login, $user_email);

        // Return Errors
        if($errors->has_errors()) return $errors;

        $user_id = wp_create_user($sanitized_user_login, $password, $user_email);
        if(!$user_id || is_wp_error($user_id))
        {
            $errors->add('registerfail', sprintf(
                __('<strong>Error</strong>: Couldn&#8217;t register you&hellip; please contact the <a href="mailto:%s">site admin</a>!'),
                get_option('admin_email')
            ));

            return $errors;
        }

        update_user_option($user_id, 'default_password_nag', true, true); // Set up the password change nag.

        /**
         * Fires after a new user registration has been recorded.
         *
         * @since 4.4.0
         *
         * @param int $user_id ID of the newly registered user.
         */
        do_action('register_new_user', $user_id);

        return $user_id;
    }

    public static function login($user_id)
    {
        wp_clear_auth_cookie();
        wp_set_current_user($user_id);
        wp_set_auth_cookie($user_id);
    }
}

endif;